The difference between suona gourd core and ordinary core

The core is one of the important components of suona, which is equipped with a whistle and connected with the supervisor. The traditional core is a single tube, while the movable core is a movable sleeve, which can change its length telescopically and be reset by the action of a spring. When playing, you can press the core up with your hand to play a temporarily changing chromatic scale or chromatic scale. If the moving core is pushed forward and locked, it can be used as a high-pitched transposed instrument with the same fingering. The slight deviation of the interval relationship after propulsion can be adjusted by controlling the mouth strength, and the player can easily adapt and make effective corrections. The movable core * * * has three specifications. Because its telescopic length can be adjusted, it solves the application problem of suona large, medium and small tones.

The core is generally made of 0.3mm thick brass sheet, and then the size of the D soprano suona core is measured on the brass sheet with a ruler, and then the shape is drawn on the brass sheet with a drawing needle. In addition, the module of the D soprano suona core can be pressed on the brass sheet and cut out according to the size of the module with scissors.